Black Spot. You need to spray with Roseclear. Always best to spray before bud burst and then several times in the year as a preventative. If you happen to grow them up on a trellis or arbour best to spray bare stems and the woodwork too as spores can overwinter on them.

Will Roseclear kill the pollinating insects though? I have a problem with blackspot too, but worry about sprays.

Spray at dusk when the moths aren't out yet and the bees and other day fliers have gone 'to bed'.

ty i will get some now,it is a climber and will spray everything

It s advised that you pick up all the infected leaves as leaving them on the soil will help to ensure it happens next year as well...